Lock.



No. 868,997. PATENTBD OCT. 22. 1907. P. J. KRULDER & P. KRULDBR, Jn.

LOCK. APPLICATION FILED MAY 11.1901.

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N VE N T0196 Iii-alder No. 868,997. PATENTED 001?. 22. 190v. P. H. J.-KRULDER & KRULDER, J3.

LOCK. APPLICATION FIL ED MAY 11.1907.

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INVENTOHS W/ TNESSES A TTOHNE rs THE Nmz'nls PETERS cc, WASHINGTON. n. c.

EErrE STATES PATENT oEEieE.

PETER H. .l. KRULDER AND PETER KRULDER, JR, OF NEW YORK, N. Y.

LOOK.

Specification of Letters Patent.

Patented Oct. 22, 1907.

Application filed May 11,1907. Serial No. 373,023.

To all whom it may concern:

Be it known that we, PETER H. J. KRULDER and PETER KRULDER, J12, both citizens of the United States, and residents of the city of New York, (borough of the Bronx,) in the county of New York and State of New York, have invented a new and Improved Lock, of which the following is a full, clear, and exact description.

This invention relates to sash and mortise locks operated by a key, and has for its object to provide means for closing the keyhole at the side of the lock opposite to that in which the key is used, thereby effectually preventing the lock from being operated from the outside, and dispensing with the usual keyholes extending in line with each other, and'the possibility of looking into a room through said holes.

Other objects relating to the specific construction and special arrangement of the several parts of the device will be understood from the accompanying drawings and following description, in which drawings like characters of reference indicate like parts throughout the views, and in which Figure 1 is a side elevation of a lock embodying my invention, with one of the sides of the casing removed; Fig. 2 is a vertical section taken on the line 2 2 of Fig. 3; Fig. 3 is a transverse horizontal section taken on the line 33 of Fig. 1, Fig. 4 is a side elevation of a bolt and tumbler; Fig. 5 is a side elevation of the parts shown in Fig. 1 with the bolt partially projected; Fig. 6 is a side elevation of the device shown in Figs. 1 and 5, showing the bolt projected to its full extent; Fig. 7 is a side elevation of a right hand tumbler; Fig. 8 is a similar view of a left hand tumbler; Figs. 9 and 10 are side elevations of right and left handed pivoted tumblers respectively; and Fig. 11 is a side elevation of the operating end of a key.

As illustrated in the drawings, 1 represents the side and 2 the face plate of a lock casing. A tongue 3 extends through the face, of the casing and is formed on a shoe 4 which is pivotally attached at 5 to a spindle lever 6, the upper end of which lever is fulcrumed on a stud 7 at one side, the opposite side of the lever being held in place by a spring 8 so as to enable said lever to be operated by the arms 9 and 10 respectively of a spindle bushing 11 having the usual aperture 12 adapted to receive a spindle. The sides 1 of the lock casing are each provided with a keyhole which are arranged out of alinement with each other. Thus, in the construction shown in Fig. 1, the stationary side of the casing is provided with a keyhole 13 arranged at the lower left hand corner of the casing, while the keyhole of the detachable side of the casing (not shown) is arranged in line with the key 14 therein shown. A tumbler is arranged adjacent to each side of the lock casing, the tumbler 15 adjacent to the permanent side of the casing being shown in Fig. 8. These tumblers are similar in general construction to each other except that one is right handed, and the other left handed relatively to the position of the keyhole in the tumbler, the tumbler shown in Fig. 8 being left hand ed, while the tumbler 16 shown in Fig. 7 is right handed. Each of these tumblers is provided with keyholes 17 and walls 18 adapt ed to be engaged by the wardsof a keyior the purpose of operating the keyhole tumblers. Each of these keyhole tumblers is also provided with a longitudinal slot 19 which engages a stud 20 attached to the permanent side of the lock casin g, and guides the movement of the lock tumblers. Springs 21 of any suitable construction are attached to posts fixed to the permanent side of the lock casing. Tumblers 22 and 23 are arranged adjacent to the keyhole tumblers on the inner side thereof, and provided with arms 24 having apertures 25 which engage a stud 26 fixed to the permanent side of the lock casing. These tumblers are also provided with steps 27 and 28 respectively for engaging the recesses of a bolt tumbler hereinafter described. The pivoted tumblers are also provided with inclined slots 29 which engage the stud 20 of the lock casing. Apertures 30 and 31 are formed in the pivoted tumblers, preferably semicircular in outline, the walls of said apertures forming wards adapted to engage the wards of a key and lift said tumblers on their pivots. Notches 32 are also formed on said tumblers adapted to receive the ends of the ward of a key. Springs 33 may be attached to posts so as to bear at their free end against the inner ends of the pivoted tumblers and hold them properly in position.

A central tumbler 34, shown in Fig. 4, is arranged be tween the pivoted tumblers 22 and 23, having a shoe 35 and bolt 36 connected therewith. The bolt tumbler is provided also with a longitudinal slot 37 adapted to engage the stud 20 of the casing, and notches 38 are formed in the upper edge of the tumbler to engage the stops 27 and 28 of the pivoted tumblers 22 and 23 respectively. Apertures 39 and 40 are formed in the bolt tumbler so as to provide wards 41 and 42 respectively. Notches 4 3 are formed at the upper portion of the apertures 39 and 40 respectively adapted to receive the outer end of a key ward, as the key is rotated in the lock casing.

When the device is in use and the bolt retract-ed into the casing, the parts are arranged as shown in Fig. 1, wherein the detachable side is removed from the casing. The key 14 is shown therein as extending through the keyhole of said detachable side with the ward of the key in line with the keyhole. In throwing or projecting the bolt from the face of the casing, the key, as shown in Fig. 1, is turned from left to right. The first quarterturn of the key in that direction moves the keyhole tumbler 15 on the opposite side of the casing longitudinally carrying the keyhole 17 of the tumbler beyond the keyhole of the permanent side of the casing, as indicated in Fig. 2. As the key is turned another quarter revolution it is bro'ught into the position indi I the face of said casing, and with ward apertures adapted cated in Fig. 5, in which the ward of the key is in contact with the walls of the apertures 30 and 31 of the pivoted tumblers 22 and 23, raising and releasing the stops 27 and 28 of said tumblers from the notches 38 of the bolt tumbler 34. By continuing the rotation of the key another quarter turn in the same direction. the bolt is fully projected through the face of the casing as shown in Fig. 0. This is accomplished by the ward of the key coming in contact with the wards 4-1 of the bolt tumbler 34. When in such position the door is locked and the keyhole 13 of the permanent side of the casing is closed by the keyhole tulnbler 15, the keyhole 17 of said tumbler being out oi alinement with the keyhole of the using. When the key is rotated in the same direction as before another quarter turn from that shown in Fig. 6. the ward of the key will be in alinement with the keyhole through which it was inserted into the lock, and the keyhole of the tumbler adjacent to the permanent side of the casing will also be in alinement with the keyhole of the casing adjacent thereto. When the keyholes of the casing are in line with the keyholes ol the tumblers adjacent thereto it is not possible to look through the lock into i pmvmod with a keyhole and Ward apertures arranged a room, for the reason that the keyholes oi the casing 1 are out of alinement with each other. I

By means of the construction herein shown and described, a lock is produced simple in construction. effective in operation durable in use, and incapable of being operated from the outside while the bolt is thrown and the key in place on the inner side of the lock.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent is:

1. The combination ot' a lock casing having keyholes arranged out of alinement with each other, tumblers adjacent to the inner sides of said casing, each provided with a keyhole and ward aperture arranged reversely to the cor responding elements of the other tumbler, and tumblers pivotaliy mounted upon a post attached to said casing and provided with an inclined slot adapted to engage a guidepost attached to said casing, and with apertures forming wards adapted to be arranged in line with the keyholes and ward apertures of the keyhole tumblers.

F2. The combination of a lock casing having keyholes arranged out of alinement with each other, tumblers adjacent to the inner sides of said casing, each provided with a keyhole and ward aperture, tumblers pivoted to said casing and provided with apertures adapted to register with the kevholes and apertures of the first named tumblers, and a central tumbler provided with a shoe and a bolt engaging to register with the keyholes and ward apertures of the iii-st named tumblers and the ward apertures of the pivoted tumblers.

.l. The combination with a lock casing having keyholes arranged out of alinement with each other, of a central tumbler provided with retaining notches, a shoe and a bolt formed thereon, with ward apertures and a guiding slot, tumblers arranged on opposite sides of said bolt tumbler, pivoted to said casing, and provided with steps adapted to engage the notches of the bolt tumbler, and ward apertures registering with the ward apertures of the central bolt tumbler, and other tumblers provided with keyholes and ward apertures reversely arranged and adapted to register with the ward apertures of the central and intermediate tumblers.

-l-. The combination of a lock casing having keyholes arranged out of alinement with each other, a tumbler provided with a keyhole and a ward aperture, a tumbler pivoted to said casing and provided with ward apertures adapted to register with the keyhole and ward aperture of the lirst named tulnbler, a tumbler provided with apertures adapted to register with the keyholes and apertures of the other tumblers, and a bolt connected therewith, and means connected with the bolt tumbler and pivoted tumbler adapted to lock them in engagement with each other.

3. The combination of a lock casing having keyholes arranged out of alinement with each other, tumblers arranged adjacent to the inner sides of said casing and each versely to the corresponding elements 01' the other tumblers, intermediate tumblers pivoted to said casing and pro vided with apertures adapted to register with the apertnres and keyholes of the outer tumblers, a central tumbler provided with a shoe and a bolt engaging an aperture formed in the face of said casing, means for locking the intermediate tumblers in engagement with the central tumbler, and springs adapted to hold said tumbler-sin operative position,

G. The combination with a lock casing having keyholes arranged out of alinement with each other, tumblers adja cent to the side of said casing and provided with blank portions adapted to be brought in alinement with the keyholes of the casing. a central bolt tumbler provided with ward apertures adapted to register with the key-holes of the casing. and provided with notches on its upper edge, and tumblers pivoted on said casing arranged intermediate the iirst named tumblers and bolt tumbler, and provided with ward apertures adapted to register with the key-holes of said casing, and with stops adapted to engage the notches of the bolt tumbler.

In testimony whereof we have signed our names to this l x i PETER H. J. KRULDER. PETER K-RULDER, JR.

Witnesses ROBERT W. WARDIL, JOHN P. DAVIS. 

